Process of granulating molten slag.



H. coLLosUs.

PROCESS '0F GRANULATING MOLTEN SLAG.

APPLIOATIONVIILED MAB. 16. 1910.

980,606. 4 PatentedJ.f11,1L?v1911.l

| j? if? H. CDLLOSEUS. PRooBss or GRANULATING MOLTBN SLAG.

v APPLIOATION FILED MABJB, 1910. V l v 980,606, V Patented Jan.3, 1911.

je rele for.'

y w1 JW HEINRICH COLL'OSEUS, 0F BERLIN, GERMANY.

PRQCESSYOF GRANULATING MLTEN SLAG.`

aseos.

Specification of Letters Patent.

Patented Jan.y 3; i911.

'Application tiled March 16, 1910. Serial No. 549,605.

To all whom it may concern: I Be it known that I, HEINRICH Communs, a subject of the King of Prussia, and resident of 27 Regnsburgerstrasse, BerlinGer man Empire, ave invented anew an Imroved Process for Granulating Molten lag, of which kthe following is a specification.

This invention relates to an improved process for granulating molten slag. l lt has already been proposed to cause a stream of molten slag to fall upon a drum rotating at a high speed and provided at its outer clrcumference with a number of nozzles, through which liquid was spra ed through the stream of molten slag. ith this arrangement the nozzle-drum had a double duty to perform, viz. firstly to break up the stream or duid, and secondly to break up the stream of slag. I have found that a better result is obtained b breaking up the stream of molten slag be ore it reaches the revolving drum. The slag may be broken ,up in any well-known manner, for instance by a nozzle; preferabl the nozzle for breaking o the stream of s a is arranged behind the owing slag and a ve the revolving nozzle-drum, so tliat a more or less horizontal stream of air, liquid or steam is blown through the stream of slag. With this arrangement the ne division of the slag and partly also its treatment with a solvent may take place at the same point. The nozzledrum lls the space throu h which the linely divided slag has passe with the vapor, which may e combined with liquids ada ted for the treatment of the slag, such as or example salts in solution, so that the stream of -nely divided slag is forced to pass in a regular manner through a layer of such finely divided liquids.- In this manner the i stream of liquids can be conveniently conducted and easily min led with the stream of slag to be converte The process is carried yout in suitable apparatus of which one form is shown in the accompanying drawings in which:

Figure l re resents an apparatus for granulating mo ten slag in longitudinal section in the direction of the movin slag, and Fi 2 is a section `on line A, B, o Fig. 1.

imilar letters of reference denote like parts in both gures.

In thedrawmgs a represents the revolving nozzle-drum which serves the purpose of the linely divided sla lling the space c in which the granulation takes place with finely s rayed liquid. Such liquid, for instance a sa t solution, say of sulfate of magnesium is introduced into the interior of the drum by means of ipes 11,6. The molten slag, for instance last furnace slag is introduced through the channel ol. Below this channel there is a pipe e and a second pipe f one of which serves for introducing a stream of steam or* liquid while the other serves as a conduit for anl air current. Either steam, liquid or air may be used to deflect and disintegratethe current of slag g or -two of these means or all three of them may be used simultaneously for this' pur ose.

'I e nozzle-drum is shown in Fig. 2 partly in section and partly in elevation so that the slots h through which the liquid enters are fully shown. The nozzle-drum is rotated by means of the power pulley z'. To

4prevent particles of slag from fallmg onto the shaft of the drum whereby same might be heated and injured conical guards c, are provided and l represents a? funnel through which obnoxious or injurious gases may escape.

I claim 1. The process of granulating molten slag consisting in subjecting a stream of molten slag to the action" of a nearly horizontally applied current of a iuid which is adapted to break up said slag, and then subjecting to the action of rotating streams of line y divided liquid,

2. The process of granulating molten slag consistin in subjecting a stream of molten slag to t e action of a nearly horizontally applied current of a gaseous uid which is a apted to break u said slag, and then subjecting the nely ivided slag to the action of rotating4 streams "of finely divided liquid.

3. The process of granulating molten slag consisting in subjecting the stream of molten 

